Man-in-the-Middle (MitM) Affecting org.matrix.android:matrix-android-sdk2 package, versions [,1.2.2)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.09% (39th percentile)

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  • Snyk IDSNYK-JAVA-ORGMATRIXANDROID-1586044
  • published17 Sept 2021
  • disclosed17 Sept 2021
  • creditUnknown

Introduced: 17 Sep 2021

CVE-2021-40824  (opens in a new tab)
CWE-300  (opens in a new tab)

How to fix?

Upgrade org.matrix.android:matrix-android-sdk2 to version 1.2.2 or higher.

Overview

org.matrix.android:matrix-android-sdk2 is a Matrix SDK for Android, extracted from the Element Android application.

Affected versions of this package are vulnerable to Man-in-the-Middle (MitM). A logic error in the room key sharing functionality allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.

CVSS Scores

version 3.1